/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package studio.raptor.ddal.core.engine.plan.node.impl.rewrite;

import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import studio.raptor.ddal.core.engine.ProcessContext;
import studio.raptor.ddal.core.engine.plan.node.ProcessNode;
import studio.raptor.ddal.core.router.result.RouteNode;

/**
 * @author Sam
 * @since 3.0.0
 */
public class OutputRewrittenSql extends ProcessNode {

  private static Logger log = LoggerFactory.getLogger(OutputRewrittenSql.class);

  @Override
  protected void execute(ProcessContext context) {
    String sql = context.getStatementContext().getSqlBuilder().toString();
    for (RouteNode routeNode : context.getStatementContext().getRouteResult().getRouteNodes()) {
      String finalSql = sql;
      for (Map.Entry<String, String> rewriteAttribute : routeNode.getRewriteAttributes()
          .entrySet()) {
        finalSql = finalSql.replaceAll(rewriteAttribute.getKey(), rewriteAttribute.getValue());
      }
      routeNode.setFinalSql(finalSql);
    }
    if(log.isDebugEnabled()) {
      log.debug("Rewrite result: {}", context.getStatementContext().getRouteResult().getRouteNodes());
    }
  }
}
